{"id":3015240,"url":"https://alion.io/job/exotrail-flight-dynamics-software-engineer-fh","title":"Flight Dynamics Software Engineer (F/H)","company":{"id":53096,"name":"Exotrail","domain":"exotrail.com","url":"https://alion.io/company/exotrail","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"A","score":88,"open_postings":33,"ghost_share":0.121,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":79,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_company_offices","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Toulouse, France"],"countries":["FR"],"hiring_countries":["FR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":79000,"period":"year","method":"role_country_seniority_unknown","sample_n":469},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"GitLab","optional":false},{"name":"Java","optional":false},{"name":"Linux","optional":false},{"name":"Agile","optional":true},{"name":"Docker","optional":true},{"name":"GMAT","optional":true},{"name":"Orekit","optional":true},{"name":"Python","optional":true},{"name":"STK","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-21T13:57:26Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-24T01:33:55Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":2},"description":"About Exotrail\nSpace is becoming more strategic and competitive than ever. Tomorrow’s space leaders will not simply launch satellites into orbit, they will be able to move them, reposition them, extend their lifetime, and maximize their performance in space.\nSince 2017, Exotrail has been developing and operating cutting-edge in-space mobility solutions for commercial, institutional, and defense customers. From our high-performance propulsion system spaceware™ to our orbital transfer vehicle spacevan™, we enable satellites to go farther, stay operational longer, and achieve more.\nToday, more than 200 Exotrailers across Massy and Toulouse are working together to make space operations more efficient and sustainable.\nBacked by over €75 million in funding, we are pursuing a clear mission:\nMaking space a sustainable frontier for future generations.\nJob Description\nAt Exotrail, we're building the technologies that make space mobility more flexible, efficient and sustainable. As part of our In-Orbit Services (IOS) division, you will contribute to the development of SpaceTower™, our flight dynamics and mission operations software platform supporting spacecraft missions from mission design to in-orbit operations.\nAs a Flight Dynamics Software Engineer, you will combine astrodynamics expertise and software engineering skills to design, develop and maintain the flight dynamics capabilities used by our teams and customers worldwide.\nIf you enjoy solving complex orbital mechanics challenges, building reliable software products and seeing your work directly support operational space missions, we'd love to hear from you.\nYour Mission\nYou will contribute to the design, development and validation of Exotrail's Flight Dynamics System (FDS), supporting mission analysis, orbit determination, maneuver planning, trajectory optimization and operational flight dynamics activities.\nWorking closely with Flight Dynamics, Software, System and Operations teams, you will deliver high-performance software solutions that support spacecraft throughout their entire lifecycle, from mission preparation to routine operations in orbit.\nYour Responsibilities\nMission Analysis & Astrodynamics\nDesign and implement orbit propagation, orbit determination and maneuver planning algorithms.\n\nDevelop trajectory optimization solutions for spacecraft missions.\n\nContribute to mission analysis and operational flight dynamics capabilities.\n\nValidate algorithms through simulation, testing and operational data analysis.\n\nTranslate mission requirements into robust software solutions in collaboration with multidisciplinary teams.\n\nSoftware Development\nDesign, develop and maintain Flight Dynamics software products, including SpaceTower™.\n\nParticipate in software architecture decisions and technical roadmap definition.\n\nImprove software performance, scalability, robustness and maintainability.\n\nDevelop automated testing frameworks and validation tools.\n\nContribute to continuous integration and software quality processes.\n\nParticipate in code reviews and software development best practices.\n\nProduce high-quality technical documentation.\n\nMission & Operations Support\nSupport System Engineering and Operations teams during CONOPS definition and mission preparation.\n\nTrain and assist internal and external users of SpaceTower™.\n\nParticipate in software and operational validation campaigns.\n\nSupport critical mission phases such as launch, commissioning and end-of-life operations.\n\nInvestigate operational anomalies and contribute to continuous process improvements.\n\nWhat We're Looking For\nRequired Qualifications\nMaster's degree or PhD in Aerospace Engineering, Astrodynamics, Applied Mathematics, Physics, Computer Science, or a related field.\n\nStrong foundation in applied mathematics and solid understanding of space mechanics\n\nGood understanding of spacecraft dynamics, orbit propagation and numerical methods.\n\nProven experience in software development using Java (must have), Linux\n\nGit/GitLab, CI/CD/CT\n\nFluency in English and French\n\nPreferred Qualifications\nExperience with flight dynamics libraries and tools (Orekit, GMAT, STK/ODTK, Tudat, Orecz).\n\nPython and Typescript\n\nContainerization and Orchestration (e.g.,Docker, Kbernetes)\n\nKnowledge of Guidance, Navigation & Control (GNC) systems.\n\nKnowledge of Agile development methodologies.\n\nSoft skills\nStrong analytical and problem-solving mindset, with the ability to tackle complex technical challenges.\n\nAbility to work effectively in a multidisciplinary team environment, collaborating with engineers, scientists, and operations teams.\n\nStrong communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.\n\nProactive attitude and ownership mindset, capable of driving topics from concept to completion.\n\nComfortable working in a fast-paced and evolving environment.\n\nAbility to provide constructive feedback and contribute positively to team growth and continuous improvement.\n\nCapacity to work on on-call work during critical phases (launch, commissioning)\nWhy Join Exotrail?\nContribute to technology that truly operates in space.\n\nWork on complete systems, from embedded software development to in-orbit operations.\n\nCollaborate with passionate experts across systems, avionics, software, propulsion, and space operations.\n\nTake part in innovative projects within a rapidly growing international company.\n\nMake a direct impact on the space missions and technologies of tomorrow.\n\nWhat We Offer\n70% employer-funded health insurance.\n\n50% reimbursement of public transportation costs.\n\nUp to 2 days of remote work per week, depending on the position.\n\nEnhanced maternity and paternity leave coverage with no seniority requirement.\n\nTraining and professional development opportunities.\n\nWell-being programs including Moka Care, conferences, and the ExoCare Program for Moments that Matter.\n\n35 days of paid leave per year (vacation + RTT equivalent).\n\nWorking Environment\nOffices located in the heart of Toulouse.\n\nComplimentary coffee, tea, and fresh fruit available on site.\n\nWork-Life Balance\nRegular team events and afterworks.\n\nOn-site osteopathy sessions organized at both locations.\n\nRecruitment Process\n1. HR Interview\nDiscussion about your background, motivations, and career aspirations.\n2. Hiring Manager Interview\nConversation focused on the role, team challenges, and your professional experience.\n3. Technical Interview\nAssessment of your technical skills, engineering approach, and problem-solving capabilities.\n4. Final Interview\nA final discussion to confirm mutual fit and answer any remaining questions.\nReady to launch your career beyond Earth? Join Exotrail and help shape the future of sustainable space mobility.","description_format":"text","description_chars":6763,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"French","level":"Advanced (C1)","optional":false},{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Health insurance","Professional development"],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Satellite Manufacturing","Space Services"],"lifecycle":[{"event":"open","at":"2026-10-21T16:27:15Z"}],"visa":[],"liveness":{"score":99,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.993,"p_room":1,"age_days":2,"expected_fill_days":79,"reasons":["conf:4","urgency","velocity","win:early"],"computed_at":"2026-10-24T06:02:35Z"},"pay":null,"html_url":"https://alion.io/job/exotrail-flight-dynamics-software-engineer-fh","json_url":"https://alion.io/job/exotrail-flight-dynamics-software-engineer-fh.json","meta":{"generated_at":"2026-10-24T06:25:33Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":9286,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":53096},"rest":"https://alion.io/mcp/rest/get_company?id=53096"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fexotrail-flight-dynamics-software-engineer-fh"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fexotrail-flight-dynamics-software-engineer-fh"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fexotrail-flight-dynamics-software-engineer-fh"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/exotrail-flight-dynamics-software-engineer-fh\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fexotrail-flight-dynamics-software-engineer-fh"}]}